Recognised as Colour

#FFF251

#FFF251
Yellow
Light
Nearest: Gold

#FFF251 is a yellow with RGB values 255, 242, 81 and HSL 56°, 100%, 66%. It is a light colour, so black text on it reaches 18.1:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FFF251#FFF251

HEX#FFF251

RGBrgb(255, 242, 81)

RGB (0–1)1, 0.949, 0.3176

RGB percentages100%, 94.9%, 31.8%

HSLhsl(55.5, 100%, 65.9%)

HSV / HSBhsv(55.5, 68.2%, 100%)

CMYK0%, 5.1%, 68.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,773,713

CSS custom property--colour: #FFF251;

Brightness & contrast

Relative luminance0.85358WCAG 2.x, 0 is black and 1 is white

Perceived brightness233.6 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 18.07:1

Contrast with white1.16:1WCAG normal text: Fail

Contrast with black18.07:1WCAG normal text: AAA

Greyscale equivalent#E9E9E9

Inverted#000DAE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFEA38no red cones; affects about 1% of men; ΔE 7.1 from the original

Deuteranopia#FFF15Cno green cones; the most common form, about 1% of men; ΔE 4.5 from the original

Tritanopia#FFE2D2no blue cones; rare, and affects men and women equally; ΔE 67.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.16:1WCAG large text: Fail

Contrast with black, large text18.07:1WCAG large text: AAA

Named colours

Gold · ΔE 17.8 Yellow · ΔE 21 Khaki · ΔE 30.9 Yellow green · ΔE 31.5 Goldenrod · ΔE 32.6 Green yellow · ΔE 39.7

Nearest named CSS colourGold (#FFD700)ΔE 17.84, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#515EFF

Analogous#FF9B51, #B5FF51

Triadic#51FFF2, #F251FF

Split complementary#51B5FF, #9B51FF

Tetradic#51FF9B, #515EFF, #FF51B5

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFFFFF

Lighter +30%#FFFDEA

Lighter +20%#FFFAB7

Lighter +10%#FFF684

Darker −10%#FFEE1E

Darker −20%#EAD900

Darker −30%#B7A900

Darker −40%#847A00

More saturated +25%#FFF251

Less saturated −25%#E9E067

Channel breakdown

R255

G242

B81

Red255 (100%)

Green242 (94.9%)

Blue81 (31.8%)

Hue55.52°

Saturation (HSL)100%

Lightness65.88%

Dominant channelRed

Hex per channelR FF · G F2 · B 51

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFF251 (chemical formula)

Formula
4,806.494 g/mol
253 atoms

FFF251 has a molar mass of 4,806.494 g/mol, made up of 253 atoms across 1 element: 253 × F.

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Molar mass

Molar mass4,806.494 g/mol

Total atoms per molecule253

Distinct elements1

Mass of one molecule7.9813711 × 10^-21 g

Molecules per gram1.2529176 × 10^20

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

F100%

Fluorine (F × 253)4,806.494 g/mol, 100%

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Elements in this formula

Fluorine

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